CN114544908B - Colliery low concentration gas heating device - Google Patents

Abstract

The invention discloses a coal mine low-concentration gas heating device, belonging to the technical field of gas heating equipment; comprises a shell, a feeding pipe, a detection mechanism, a power mechanism and a heating mechanism; the feeding pipe is fixedly arranged in the shell and comprises a guide pipe, and a retainer ring is fixedly arranged on the guide pipe coaxially; the detection mechanism comprises a sealing assembly and a detection assembly, the sealing assembly is coaxially and slidably mounted on the guide pipe, and the detection assembly is fixedly mounted on the sealing assembly; the power mechanism comprises a linear motion unit and a circular motion unit, and the linear motion unit and the circular motion unit are both connected with the detection mechanism; the heating mechanism is fixedly arranged on the shell and heats through low-concentration gas. The invention realizes heating by using low-concentration gas through the detection mechanism, the power mechanism and the heating mechanism, and has simple structure and convenient operation.

Description

Colliery low concentration gas heating device

Technical Field

The invention belongs to the technical field of gas heating equipment, and particularly relates to a low-concentration gas heating device for a coal mine.

Background

The coal bed gas refers to unconventional natural gas associated with coal resources and existing in coal beds and surrounding rocks thereof, commonly referred to as gas, and the gas is usually present in coal mining mines. The gas is used as a gas rich in methane, when the gas concentration in the space is too high, explosion can be caused in a short time, and serious harm is caused to the coal mine environment and mining personnel; meanwhile, because methane in the gas is a greenhouse gas second to Freon and can destroy the ozone layer, the gas in the mine has great harm to the human health or the environment.

Since methane in the gas contains carbon and hydrogen, carbon dioxide and water are generated when methane is burned. In recent years, people begin to treat gas in a combustion mode so as to reduce the harm of the gas, and when the gas is combusted in a coal mine, the generated heat can be used for supplying heat to a boiler room, a dormitory heater, a bathroom and the like, so that the full utilization of resources is facilitated.

Chinese patent publication No. CN108087897A discloses a coal mine low-concentration gas catalytic combustion heat energy utilization device, which includes the treatment of low-concentration gas catalytic combustion, catalytic combustion heat energy recovery and reuse, and the like. Although the invention can burn low-concentration gas, the concentration of the gas cannot be detected in real time, and when the gas concentration is unqualified, the gas can be adjusted in real time, thereby ensuring the safety of gas burning. Aiming at the problems, the invention provides a coal mine low-concentration gas heating device.

Disclosure of Invention

Aiming at the technical problems, the technical scheme adopted by the invention is as follows: a coal mine low-concentration gas heating device comprises a shell and a feeding pipe; the device also comprises a detection mechanism, a power mechanism and a heating mechanism; inlet pipe fixed mounting in the inside of casing, the inlet pipe include the pipe, the pipe on with axle center fixed mounting have the retaining ring.

The outer wall of the detection mechanism is in sliding fit with the inner wall of the shell, and the inner wall of the detection mechanism is in sliding fit with the feeding pipe; the detection mechanism comprises a sealing assembly and a detection assembly, the sealing assembly is coaxially and slidably mounted on the guide pipe, and the detection assembly is fixedly mounted on the sealing assembly.

The power mechanism comprises a linear motion unit and a circular motion unit, the linear motion unit and the circular motion unit are both connected with the detection mechanism, and when the detection assembly detects the concentration of gas in the guide pipe, the linear motion unit moves the sealing assembly between the guide pipe and the check ring; when the gas concentration in the guide pipe needs to be adjusted, the circular motion unit drives the detection mechanism to rotate.

The heating mechanism is fixedly arranged on the shell and is communicated with the detection mechanism through a through pipe I and a through pipe II; the first through pipe and the second through pipe are used for conveying gas to the heating mechanism so that the gas can be combusted in the heating mechanism.

Further, seal assembly including detection shell, division board, round hole, detection shell with shelter from a section of thick bamboo sliding fit, shelter from a section of thick bamboo and pipe sliding fit, division board fixed mounting in detection shell inner circle, just the division board be located the round hole and shelter from between the section of thick bamboo, the round hole have two, and the central line coincidence of two round holes.

Further, the shielding cylinder is provided with a shielding lug, the guide pipe is provided with a guide groove, the check ring is provided with an attaching groove, the shielding lug is in sliding fit with the guide groove, when the shielding lug slides to the attaching groove along the guide groove, one end of the shielding cylinder is connected with the guide pipe, and the other end of the shielding cylinder is connected with the check ring, so that the guide pipe and the check ring are sealed.

Furthermore, the detection assembly is a detector which is fixedly arranged on the isolation plate, and the isolation plate is provided with a vent hole.

Further, the linear motion unit include the transmission shaft, transmission shaft one end and the one end fixed connection of explosion-proof circle, the other end and the lantern ring fixed connection of transmission shaft, explosion-proof circle other end and division board fixed connection, and explosion-proof snare establish outside the detector, the one end normal running fit of lantern ring one and driving lever, the other end and the rack fixed connection of driving lever, rack slidable mounting on the casing, just rack and gear engagement, the gear pass through a power supply drive.

Further, the linear motion unit further comprises two electromagnets, one electromagnet is fixedly installed on the detector, the other electromagnet is fixedly installed on the spline disc, the spline disc is fixedly installed on the transmission shaft, and a plurality of springs are fixedly installed between the spline disc and the detector.

Further, the circular motion unit include major axis, the spline lantern ring with the axle center rotate to install on detecting the shell, spline lantern ring center set up slottedly, the spline lantern ring with the axle center sliding fit of transmission shaft, lantern ring one with major axis sliding fit, the rotatable inside of installing at detection mechanism and heating mechanism of major axis.

Furthermore, the central lines of the first through pipe and the second through pipe at the interface of the shell are mutually perpendicular, the central axis of the second through pipe at the interface of the shell coincides with the central axis of the gas inlet, and the central axis of the first through pipe at the interface of the shell coincides with the central axis of the oxygen inlet.

Further, heating mechanism include the heating chamber of fixed mounting on the casing, the heating chamber is installed with the axle center to the heating intracavity portion, the one end fixed mounting of cooling tube is in the inside in heating chamber, the other end and heat transmission pipe connection, the fluid pipe passes the heating chamber, and the both ends of fluid pipe are located outside the heating chamber.

Compared with the prior art, the invention has the beneficial effects that: (1) the gas heater realizes heating by using low-concentration gas through the detection mechanism, the power mechanism and the heating mechanism, and has the advantages of simple structure and convenient operation; (2) the power mechanism can flexibly select the adjustment mode of the gas concentration according to the detection result of the detection mechanism, and the practicability is high; (3) the heating mechanism can utilize gas to heat, inputs heat into a required pipeline, and can heat fluid in the heating process, thereby effectively saving energy.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is another perspective view of the overall structure of the present invention.

Fig. 3 is a schematic view of the rest of the structure of the present invention without the housing.

Fig. 4 is a schematic view of a part of the structure of the detection mechanism.

Fig. 5 is a schematic view of a part a of the enlarged structure in fig. 4.

Fig. 6 is a schematic view of a part of the structure of the detection mechanism.

Fig. 7 is a schematic structural view of the power mechanism.

Fig. 8 is a schematic view of a partial structure of the power mechanism.

Fig. 9 is a schematic view of the structure of the catheter and the retainer ring.

Fig. 10 is a schematic structural view of a shielding cylinder.

Fig. 11 is a schematic view of a partial structure of the power mechanism.

Fig. 12 is a partially enlarged structural view of a portion B in fig. 11.

FIG. 13 is a partial structural view of the present invention.

Fig. 14 is a partially enlarged view of a structure at C in fig. 13.

Reference numbers: 1-a shell; 2-feeding pipe; 201-a catheter; 2011-guide grooves; 202-a retainer ring; 2021-fitting groove; 3-a detection mechanism; 301-a detection housing; 302-a shielding cylinder; 3021-blocking bumps; 303-a separation plate; 304-a circular hole; 305-a detector; 4-a power mechanism; 401-an electric machine; 402-long axis; 403-a first conical gear set; 404-a second conical gear set; 405-a gimbal; 406-a gear; 407-rack; 408-a deflector rod; 409-collar one; 410-a spline collar; 411-a propeller shaft; 412-splined disc; 413-explosion-proof ring; 414-an electromagnet; 415-a spring; 5-a heating mechanism; 501-heating cavity; 502-a heating chamber; 503-fluid tube; 504-a radiating pipe; 6-gas inlet; 7-an oxygen inlet; 8-a first pipe; 9-a pipe II.

Detailed Description

The present invention will be further described with reference to specific examples, which are illustrative of the invention and are not to be construed as limiting the invention.

Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better explain the embodiments of the present invention, some components in the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product, and it may be understood that some well-known structures in the drawings and descriptions thereof may be omitted to those skilled in the art.

The embodiment is as follows: as shown in fig. 1 to 8, the coal mine low-concentration gas heating device comprises ashell 1, afeeding pipe 2, adetection mechanism 3, apower mechanism 4 and aheating mechanism 5; thefeed pipe 2 is fixedly arranged inside theshell 1, thefeed pipe 2 comprises aguide pipe 201, and aretainer ring 202 is coaxially and fixedly arranged on theguide pipe 201.

The outer wall of thedetection mechanism 3 is in sliding fit with the inner wall of theshell 1, and the inner wall of thedetection mechanism 3 is in sliding fit with thefeeding pipe 2; thedetection mechanism 3 comprises a sealing component and a detection component, the sealing component is coaxially and slidably mounted on theguide pipe 201, and the detection component is fixedly mounted on the sealing component.

Thepower mechanism 4 comprises a linear motion unit and a circular motion unit, the linear motion unit and the circular motion unit are both connected with thedetection mechanism 3, and when the detection assembly detects the concentration of gas in theguide pipe 201, the linear motion unit moves the sealing assembly between theguide pipe 201 and theretainer ring 202; when the gas concentration in theconduit 201 needs to be adjusted, the circular motion unit drives thedetection mechanism 3 to rotate.

Theheating mechanism 5 is fixedly arranged on theshell 1, and theheating mechanism 5 is communicated with thedetection mechanism 3 through a through pipe I8 and a through pipe II 9; thefirst pipe 8 and thesecond pipe 9 are used for conveying gas to theheating mechanism 5, so that the gas is combusted in theheating mechanism 5.

The sealing assembly comprises adetection shell 301, anisolation plate 303 andround holes 304, thedetection shell 301 is in sliding fit with ashielding barrel 302, theshielding barrel 302 is in sliding fit with theguide pipe 201, theisolation plate 303 is fixedly installed in the inner ring of thedetection shell 301, theisolation plate 303 is located between theround holes 304 and theshielding barrel 302, the number of theround holes 304 is two, and the central lines of the tworound holes 304 coincide.

Theshielding barrel 302 is provided with ashielding lug 3021, theguide pipe 201 is provided with aguide groove 2011, theretainer ring 202 is provided with an attachinggroove 2021, theshielding lug 3021 and theguide groove 2011 are in sliding fit, when theshielding lug 3021 slides to the attachinggroove 2021 along theguide groove 2011, one end of theshielding barrel 302 is connected with theguide pipe 201, and the other end of theshielding barrel 302 is connected with theretainer ring 202, so that theguide pipe 201 and theretainer ring 202 are sealed.

The detection component is adetector 305, thedetector 305 is fixedly installed on theisolation plate 303, and theisolation plate 303 is provided with a vent hole.

The linear motion unit comprises atransmission shaft 411, one end of thetransmission shaft 411 is fixedly connected with one end of an explosion-proof ring 413, the other end of thetransmission shaft 411 is fixedly connected with afirst lantern ring 409, the other end of the explosion-proof ring 413 is fixedly connected with theisolation plate 303, the explosion-proof ring 413 is sleeved outside thedetector 305, thefirst lantern ring 409 is in running fit with one end of ashifting rod 408, the other end of the shiftingrod 408 is fixedly connected with arack 407, therack 407 is slidably mounted on theshell 1, therack 407 is meshed with thegear 406, and thegear 406 is driven by a first power source.

The linear motion unit further comprises twoelectromagnets 414, oneelectromagnet 414 is fixedly mounted on thedetector 305, theother electromagnet 414 is fixedly mounted on aspline disc 412, thespline disc 412 is fixedly mounted on atransmission shaft 411, and a plurality ofsprings 415 are fixedly mounted between thespline disc 412 and thedetector 305.

Specifically, the first power source comprises auniversal joint 405, the central shaft of agear 406 is connected with one end of theuniversal joint 405, the other end of theuniversal joint 405 is connected with the output end of the secondconical gear set 404, namely, thegear 406 is connected with the second conical gear set 404 through theuniversal joint 405, the input end of the secondconical gear set 404 is connected with the output end of the firstconical gear set 403, and thegear 406 and the secondconical gear set 404 are both rotatably mounted on thehousing 1; the first power source further comprises a firstconical gear set 403 and amotor 401, an output shaft of themotor 401 is fixedly connected with thelong shaft 402, an input end of the firstconical gear set 403 is fixedly connected with thelong shaft 402, and an output end of the firstconical gear set 403 is connected with an input end of a secondconical gear set 404.

The circular motion unit comprises along shaft 402 and aspline lantern ring 410, thespline lantern ring 410 is coaxially and rotatably installed on thedetection shell 301, a groove is formed in the center of thespline lantern ring 410, thespline lantern ring 410 is coaxially and slidably matched with atransmission shaft 411, afirst lantern ring 409 is slidably matched with thelong shaft 402, and thelong shaft 402 is rotatably installed in thedetection mechanism 3 and theheating mechanism 5

The central lines of the first throughpipe 8 and the second throughpipe 9 at the interface of theshell 1 are perpendicular to each other, the central axis of the second throughpipe 9 at the interface of theshell 1 coincides with the central axis of thegas inlet 6, and the central axis of the first throughpipe 8 at the interface of theshell 1 coincides with the central axis of theoxygen inlet 7.

Theheating mechanism 5 comprises aheating cavity 501 fixedly installed on thehousing 1, aheating chamber 502 is coaxially installed inside theheating cavity 501, one end of aradiating pipe 504 is fixedly installed inside theheating cavity 501, the other end of the radiating pipe is connected with a heat transmission pipeline, afluid pipe 503 passes through theheating chamber 502, and two ends of thefluid pipe 503 are located outside theheating cavity 501.

The working principle is as follows: butt joint the mouth ofpipe 2 with the air extracting pump, then gas enters into the mouth ofpipe 2, shelter from a section ofthick bamboo 302 still to be locatedpipe 201 this moment, there is the distance betweenpipe 201 and retainingring 202 like this, gas that gets into frompipe 201 can flow in detectingshell 301, and pass the air vent ondivision board 303, after gaseousfull detection shell 301, the gap betweenpipe 201 and theretaining ring 202 need be sealed at this moment, no longer let gas flow intodetection mechanism 3 from the mouth ofpipe 2 in, then detect the gas concentration in detectingshell 301, detect whether reach required low concentration. Specifically, amotor 401 fixedly installed on theheating cavity 501 is started, an output shaft of themotor 401 drives along shaft 402 to rotate, when thelong shaft 402 rotates, an input end of a firstconical gear set 403 fixedly installed on thelong shaft 402 drives an output end of the firstconical gear set 403 to rotate, an output end of the firstconical gear set 403 drives an input end of a secondconical gear set 404 to rotate, the secondconical gear set 404 drives auniversal joint 405 to rotate through an output end, theuniversal joint 405 rotates through a centralshaft driving gear 406 because theuniversal joint 405 is connected with a central shaft of thegear 406, arack 407 meshed with thegear 406 slides on theshell 1 during rotation of thegear 406, themovable rack 407 drives ashift lever 408 to move together, theshift lever 408 drives afirst collar 409 to slide on thelong shaft 402 to one side close to themotor 401, and thefirst collar 409 is fixedly connected with atransmission shaft 411, therefore, themovable collar 409 pulls thetransmission shaft 411 to move together, thetransmission shaft 411 pulls the rotating explosion-proof ring 413 to pull thedetector 305 through the explosion-proof ring 413, thedetector 305 is installed on thepartition plate 303, thedetector 305 pulls thepartition plate 303 to move together, thepartition plate 303 is fixedly connected with thedetection shell 301, so that thewhole detection shell 301 moves towards one side away from thefeeding pipe 2, theshielding cylinder 302 is pulled to slide during the movement of thedetection shell 301, theshielding lug 3021 in theshielding cylinder 302 slides along theguide groove 2011 on theguide pipe 201 during the sliding process of theshielding cylinder 302 until theshielding lug 3021 slides onto the attachinggroove 2021, so that one end of theshielding cylinder 302 is on theguide pipe 201, the other end of theshielding cylinder 302 is on theretainer ring 202, the gap between theguide pipe 201 and theretainer ring 202 is covered, and the sliding distance of thedetection shell 301 during the sliding process is less than the distance from thecircular hole 304 to thegas inlet 6, i.e. when the centre line of thecircular aperture 304 does not coincide with the centre line of thegas inlet 6 or theoxygen inlet 7.

Then, the gas quantity in thecasing 301 is detected to be unchanged, the gas concentration is detected by thedetector 305 fixedly arranged on theisolation plate 303, the detection result is transmitted to a computer to judge whether the concentration reaches a required standard, and the explosion-proof ring 413 mainly plays a role in protecting thedetector 305.

When the detection result is lower than the required gas concentration, theelectromagnet 414 is powered off, so that the twoelectromagnets 414 are not adsorbed to each other, thespring 415 is compressed before, and then extends without being subjected to the force of the twoelectromagnets 414, thespline disc 412 is pushed to the side away from thedetector 305, thetransmission shaft 411 is fixedly connected with thespline disc 412, so that thetransmission shaft 411 slides in the center of thespline collar 410 and gradually slides into thelong shaft 402 until thespline disc 412 slides into a groove arranged in the center of thespline collar 410 to form spline fit, at this time, themotor 401 drives thelong shaft 402 to rotate, as thelong shaft 402 is fixedly connected with thespline collar 410 and thespline collar 410 is rotatably matched with thedetection shell 301, thespline collar 410 drives thetransmission shaft 411 to rotate while thelong shaft 402 drives thespline collar 410 to rotate, so that theisolating plate 303 is driven to rotate by ananti-explosion ring 413 fixedly arranged between thespline disc 412 and theisolating plate 303, thepivoted division board 303 drives and detectsshell 301 and rotates, and detectsshell 301 when the pivoted, still is being drawn by drivinglever 408 and is sliding, when around hole 304 moves the mouth ofgas import 6 andcasing 1 contact, andround hole 304 aligns withgas import 6, and anotherround hole 304 moves the kneck of siphunculus two 9 andcasing 1 this moment, and like this, extra supplementary gas enters intodetection mechanism 3 fromgas import 6, flows again and enters into through siphunculus two 9 and heats in thechamber 501 and burn.

The heat generatingcavity 501 is burned for heating, the generated heat energy is discharged from theheat dissipating pipe 504, and the outlet of theheat dissipating pipe 504 is connected to other heat energy pipelines, such as a boiler room, a bathroom, a dormitory heater, etc. of a coal mine for use. Meanwhile, when combustion is performed in theheating chamber 501, a fluid to be heated enters from one end of thefluid pipe 503, flows through theheating chamber 502 containing heat, and flows out from the other outlet of thefluid pipe 503.

When the detected structural formula is higher than the required gas concentration, onecircular hole 304 is rotated to be aligned with the first throughpipe 8, and the othercircular hole 304 is aligned with theoxygen inlet 7.

Claims (1)

1. The utility model provides a colliery low concentration gas heating device, includes casing (1), inlet pipe (2), its characterized in that: the device also comprises a detection mechanism (3), a power mechanism (4) and a heating mechanism (5); the feeding pipe (2) is fixedly arranged inside the shell (1), the feeding pipe (2) comprises a guide pipe (201), and a retainer ring (202) is coaxially and fixedly arranged on the guide pipe (201);

the outer wall of the detection mechanism (3) is in sliding fit with the inner wall of the shell (1), and the inner wall of the detection mechanism (3) is in sliding fit with the feeding pipe (2); the detection mechanism (3) comprises a sealing assembly and a detection assembly, the sealing assembly is coaxially and slidably mounted on the guide pipe (201), and the detection assembly is fixedly mounted on the sealing assembly;

the power mechanism (4) comprises a linear motion unit and a circular motion unit, the linear motion unit and the circular motion unit are both connected with the detection mechanism (3), and when the detection assembly detects the concentration of gas in the guide pipe (201), the linear motion unit moves the sealing assembly between the guide pipe (201) and the check ring (202); when the gas concentration in the guide pipe (201) needs to be adjusted, the circular motion unit drives the detection mechanism (3) to rotate;

the sealing assembly comprises a detection shell (301), two isolation plates (303) and two circular holes (304), wherein the detection shell (301) is in sliding fit with a shielding cylinder (302), the shielding cylinder (302) is in sliding fit with a guide pipe (201), the isolation plates (303) are fixedly arranged on the inner ring of the detection shell (301), the isolation plates (303) are positioned between the circular holes (304) and the shielding cylinder (302), and the central lines of the two circular holes (304) are superposed; the shielding barrel (302) is provided with a shielding convex block (3021), the guide pipe (201) is provided with a guide groove (2011), the retainer ring (202) is provided with an attaching groove (2021), the shielding convex block (3021) is in sliding fit with the guide groove (2011), when the shielding convex block (3021) slides to the attaching groove (2021) along the guide groove (2011), one end of the shielding barrel (302) is connected with the guide pipe (201), and the other end of the shielding barrel is connected with the retainer ring (202), so that the guide pipe (201) and the retainer ring (202) are sealed;

the detection component is a detector (305), the detector (305) is fixedly arranged on the isolation plate (303), and a vent hole is formed in the isolation plate (303);

the linear motion unit comprises a transmission shaft (411), one end of the transmission shaft (411) is fixedly connected with one end of an explosion-proof ring (413), the other end of the transmission shaft (411) is fixedly connected with a first lantern ring (409), the other end of the explosion-proof ring (413) is fixedly connected with an isolation plate (303), the explosion-proof ring (413) is sleeved outside the detector (305), the first lantern ring (409) is in rotating fit with one end of a shift lever (408), the other end of the shift lever (408) is fixedly connected with a rack (407), the rack (407) is slidably mounted on the shell (1), the rack (407) is meshed with a gear (406), and the gear (406) is driven by a first power source;

the linear motion unit further comprises two electromagnets (414), one electromagnet (414) is fixedly mounted on the detector (305), the other electromagnet (414) is fixedly mounted on a spline disc (412), the spline disc (412) is fixedly mounted on a transmission shaft (411), and a plurality of springs (415) are fixedly mounted between the spline disc (412) and the detector (305);

the circular motion unit comprises a long shaft (402) and a spline sleeve ring (410), the spline sleeve ring (410) is coaxially and rotatably installed on the detection shell (301), a groove is formed in the center of the spline sleeve ring (410), the spline sleeve ring (410) is coaxially and slidably matched with the transmission shaft (411), a first sleeve ring (409) is slidably matched with the long shaft (402), and the long shaft (402) is rotatably installed inside the detection mechanism (3) and the heating mechanism (5);

the heating mechanism (5) is fixedly arranged on the shell (1), and the heating mechanism (5) is communicated with the detection mechanism (3) through a through pipe I (8) and a through pipe II (9); the first through pipe (8) and the second through pipe (9) are used for conveying gas into the heating mechanism (5) so that the gas is combusted in the heating mechanism (5), the center lines of the first through pipe (8) and the second through pipe (9) at the interface of the shell (1) are mutually vertical, the center axis of the second through pipe (9) at the interface of the shell (1) is superposed with the center axis of the gas inlet (6), and the center axis of the first through pipe (8) at the interface of the shell (1) is superposed with the center axis of the oxygen inlet (7);

heating mechanism (5) including heating chamber (501) of fixed mounting on casing (1), heating chamber (501) inside install heating chamber (502) with the axle center, the one end fixed mounting of cooling tube (504) is in the inside of heating chamber (501), the other end and heat transmission pipe connection, heating chamber (502) are passed in fluid pipe (503), and the both ends of fluid pipe (503) are located outside heating chamber (501).

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